JPH08166559A - Head mounted display device - Google Patents

Abstract

PURPOSE: To satisfy all of the parallax of both eyes, the convergence of both eyes and the focal distance adjustment action of the eyes and to obtain an electrically rewritable state by changing a two-dimensional position on a flat display device based on the three-dimensional position of the gazing point of both eyes and functioning as a volume scanning three-dimensional display by following the gazing point. CONSTITUTION: According to the three-dimensional position of the gazing point 1a6 of a person, the two-dimensional position and the display contents of the flat display devices 1a2R and 1a2L can be changed. That means, when the gazing point 1a6 is set at a position shown in a figure, the devices 1a2R and 1a2L are respectively moved to the two-dimensional position corresponding to the point 1a6(decided by the focal distance of lenses 1a3R and 1a3L and the like) by moving devices 1a4R and 1a4L. Then, a picture corresponding to the position is displayed. Thus, the vicinity of the gazing point of the person can be always displayed and contradiction among the focusing action of the eyes, the parallax of both eyes and the convergence of both eyes can be eliminated. Therefore, the focusing action of the eyes, the parallax of both eyes and the convergence of both eyes being the main factor for obtaining a stereoscopic effect can be satisfied.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a head mount display device, and more particularly to a head mount display device for displaying a three-dimensional stereoscopic image of a moving image.

[0002]

2. Description of the Related Art As a conventional head mounted display device for electrically rewriting a three-dimensional display of a moving image, as shown in FIG. 9, a flat display device such as a liquid crystal display device (LCD) and a convex lens is often used. Are known.

In the figure, images of the three-dimensional object a1 viewed from different directions (this is called a parallax image) are, for example, a camera a.
Images are taken with 2L and a2R. This camera a2L, a
Images from 2R are displayed on the left and right LCDs a3L and a3R via electronic circuits (not shown). The observer observes different display images on the left and right LCDs a3L and a3R through the respective convex lenses a4L and a4R with the left and right eyes a5L and a5R, respectively. Thereby, the observer can simultaneously observe the parallax image a6 in both eyes, and stereoscopic vision by binocular parallax is possible.

[0004]

However, the head mount display device having such a structure can present binocular parallax in a certain range in the depth direction, but is required for natural stereoscopic vision. Binocular convergence,
It is difficult to ensure that there is no contradiction between the focal length adjusting action of the eye and the binocular parallax. That is, the focus of the eye is the focal lengths of the convex lenses a4L and a4R and the LCDs a3L and a3.
This is because it is fixed at a position determined by the position of R. Further, since the size of the LCDs a3L and a3R is limited, the amount of change in the vergence angle of both eyes cannot be large.

Therefore, since a contradiction occurs between the binocular parallax, vergence, and the action of adjusting the focal length of the eye, which are necessary for natural stereoscopic vision, the observer feels fatigue. I couldn't escape it.

The present invention has been made under these circumstances, and its purpose is to provide all of the main effects of binocular parallax, binocular convergence, and eye focal length adjusting action, which are the main factors that give a stereoscopic effect. And to provide an electrically rewritable head mounted display device.

The above and other objects and novel features of the present invention will become apparent from the description of this specification and the accompanying drawings.

[0008]

Of the inventions disclosed in the present application, a representative one will be briefly described below.
It is as follows.

That is, the head mount display device according to the present invention, the eye movement measuring device for measuring the eye movement, the flat display device, and the flat display device are two-dimensionally moved for each of both eyes. A moving device and a lens, and a gazing point calculating device that calculates the positions of the gazing points of both eyes from the eye movement detected by the eye movement measuring device, and the plane display from the calculated value of the gazing point calculating device. And a control device that controls the position of the device via the moving device.

[0010]

The head mount display device constructed as described above changes the two-dimensional position of the flat display device based on the three-dimensional position of the gazing points of both eyes, whereby the three-dimensional volume type by tracking the gazing points. The display can be performed.

From this, a three-dimensional image that does not cause a contradiction in the binocular parallax, the binocular convergence, and the focal length adjusting action of the eyes, which are the main elements that give a stereoscopic effect, is reproduced in an electrically rewritable form. Will be able to.

[0012]

Embodiments of the head mount display device according to the present invention will be described below. Here, in each of the embodiments described below, for convenience of description, only the direction in which the observer can easily perceive a stereoscopic effect, that is, the description is limited to the plane including the eyes of the observer, but in other planes. It will be clear that the same applies to.

Embodiment 1. 1 and 2 are schematic configuration diagrams showing an embodiment of a head mount display device according to the present invention, FIG. 1 is a perspective view, and FIG. 2 is an explanatory diagram in a plane including both eyes of an observer.

First, in FIG. 1, eye movement measuring devices 1a1R and 1a1L for measuring eye movements, flat display devices 1a2R and 1a2L, and these flat display devices 1a2 are shown.
Moving device 1a4 for two-dimensionally moving R, 1a2L
R, 1a4L, lenses 1a3R, 1a3L, and a gazing point calculating device 1a8 that calculates a three-dimensional position of a gazing point 1a6 of a person from the movements of both eyes obtained from the eye movement measuring devices 1a1R, 1a1L.

The devices 1a7R and 1a7L are attached to the left and right eyes of a person, respectively, and the two-dimensional positions of the flat display devices 1a2R and 1a2L and their display contents are changed according to the three-dimensional position of the gazing point 1a6 of the person. By doing so, it is possible to realize a volume scanning type three-dimensional display by following the gazing point.
Here, the eye movement measuring devices 1a1R, 1a1L include, for example, a light source (eg, semiconductor laser, LED, or lamp) and an optical disk (eg, photodiode).
Alternatively, it is configured by a combination with a camera or the like. The flat display devices 1a2R and 1a2L may be, for example, a combination of a light source (for example, a semiconductor laser, LED, a lamp, etc.) and a light transmittance control device (for example, a liquid crystal display device), or a scattering plate (for example, frosted glass plate, fine glass) Combination of various lens collecting plates, roughened polymer plates, etc.),
Alternatively, it is composed of a light emitting display device (for example, an LED display device, a plasma display device, a fluorescent tube display device, or the like). In addition, the mobile devices 1a4R and 1a4L are
For example, a screw (for example, a ball screw or the like) and a driving device (for example, a motor, an electrostatic moving device, an electromagnetic moving device, or the like) are included. Furthermore, the lens 1a3
Each of R and 1a3L is composed of a single lens or a combination lens including a convex lens, a concave lens, or an aspherical lens. The gazing point calculation device 1a8 is a device including, for example, a computer.

The head mount display device thus constructed can change the two-dimensional positions of the flat display devices 1a2R, 1a2L and the display contents according to the three-dimensional position of the gazing point 1a6 of the person. There is. That is, for example, when the gazing point 1a6 of a person is at the position in the figure, the plane display device 1a2R is moved to the two-dimensional position (determined by the focal length of the lenses 1a3R, 1a3L) corresponding to the position by the moving devices 1a4R, 1a4L. 1
Each a2L is moved, and the image corresponding to the position is displayed.

As a result, it is possible to always display the vicinity of the gazing point of a person, and it is possible to eliminate the contradiction between the focus adjusting action of the eye and the binocular parallax and the vergence of the binocular which are caused by the configuration shown in FIG. 9, for example. become. Therefore,
It becomes possible to realize a natural stereoscopic vision by substantially satisfying the focus adjustment action of the eyes, the binocular parallax, and the convergence of the binoculars, which are the main factors for obtaining a stereoscopic effect.

Here, in order to eliminate the contradiction between the focusing action of the eye and the binocular parallax or the vergence of the binocular, it may be considered that one-dimensional movement is possible at the minimum.
Two-dimensional movement is required in order to cope with a large movement of the eyes to the left and right and a wide visual field. Therefore, even in the case of two-dimensional movement, the movement in the one direction can be set small. Further, in FIG. 1, the flat panel display device 1a2 is shown.
Although the moving directions of R and 1a2L are set to the directions of both eyes and the direction perpendicular thereto, for example, as shown in FIG. 3, one of the moving directions of the flat panel display devices 1b2R and 1b2L is to make the gazing direction oblique. The effect of facilitating correspondence between the vergence angle and the focus adjustment of the eye is obtained.

Therefore, the flat panel display devices 1a2R, 1a2.
The moving direction of L may be set in any direction according to the purpose.

In order to secure the respective moving ranges of the flat panel display devices 1c2R, 1c2L as large as possible, for example, as shown in FIG. 4, mirrors 1c11R, 1c11 are used.
It goes without saying that the Ls may be alternately arranged on the left and right sides. Further, it is obvious that there are many other methods of separating the right and left sides by using a mirror, a prism and the like.

Example 2. FIG. 5 is a schematic configuration diagram showing another embodiment of the head mount display device according to the present invention.

In the figure, a plurality of flat panel display devices are provided in particular, and each flat panel display device is used for near points.
a2RN, 2a2LN, gazing point 2a2R, 2a2L,
They are arranged as far point 2a2RF and 2a2LF.
That is, the gazing point flat display devices 2a2R, 2a2L are arranged at positions corresponding to the gazing point 2a6 obtained by the eye movement measuring devices 2a1R, 2a1L and the gazing point calculation device 2a8 to display an image in the depth near the gazing point. Done again
The near point side 2a2RN and 2a2LN are arranged to display the near point side image, and further the far point side 2a2RF and 2a2LF are arranged to display the far point side image. I am supposed to do it.

In this way, the near-point 2a2RN, 2a
By arranging the flat display devices of 2LN or 2a2RF for far point and 2a2LF respectively, it is possible to obtain the effect of expressing the blur of the image in the depth other than the gazing point.

Further, as shown in FIG. 6, dedicated flat panel display devices 2b2RM and 2b2LM may be fixedly installed for displaying the background image. In this case, the flat panel display devices 2b2RM and 2b2LM are arranged farthest from both eyes.

The flat panel display devices 2b2RM, 2b
By making both ends of the 2LM curved in the direction of both eyes, the two LMs are configured to cover both eyes, and an effect of being able to obtain a sufficient sense of presence with respect to the background image is produced.

Example 3. FIG. 7 is a schematic configuration diagram showing another embodiment of the head mount display device according to the present invention.

As shown in the figure, the flat panel display device includes, for example, an optical scanning device for scanning a light beam or display projection devices 3a1R, 3a1L for projecting a flat display image, and a scattering plate 3a.
It is composed of 2R and 3a2L. With such a structure, it is possible to move only the scattering plates 3a2R and 3a2L while the display projection devices 3a1R and 3a1L are fixed. Scattering plate 3a
In the movement of only 2R and 3a2L, since the mechanism can have a simple structure, there is an effect that the weight of the device can be reduced.

Further, even when a plurality of flat panel display devices are used as shown in the above-mentioned second embodiment, the scattering plates 3a2R, 3a are provided.
There is an effect that it is only necessary to make a plurality of 2L in the number corresponding thereto. In this case, it goes without saying that the scattering plates 3a2R and 3a2L need to be composed of, for example, a polymer-dispersed liquid crystal plate whose transmission and scattering can be electrically switched.

Here, in FIG. 7, the scattering plate 3a is provided for both eyes.
Although the configuration is such that light is scanned or projected from the opposite side of 2R and 3a2L, it goes without saying that light may be scanned or projected from both eyes as shown in FIG. 8, for example. When configured in this way, the scattering plates 3b2R, 3b
Providing a reflective plate on the back surface of b2L that can electrically switch between reflection and transmission is effective in increasing the light utilization efficiency.

According to the head mount display device shown in each of the above embodiments, the two-dimensional position of the flat display device is changed based on the three-dimensional position of the gazing points of both eyes, thereby tracking the gazing point. It is possible to perform volumetric three-dimensional display.

From the above, a three-dimensional image which does not cause a contradiction in the binocular parallax, the binocular convergence, and the focal length adjusting action of the eyes, which are the main elements that give a stereoscopic effect, is reproduced in an electrically rewritable form. Will be able to.

[0032]

As is apparent from the above description,
According to the head mount display device of the present invention, it is possible to satisfy all of the main factors that cause a stereoscopic effect, that is, binocular parallax, binocular convergence, and eye focal length adjusting action.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a head mount display device according to the present invention.

FIG. 2 is a plan view showing an embodiment of a head mount display device according to the present invention.

FIG. 3 is a plan view showing another embodiment of the head mount display device according to the present invention.

FIG. 4 is a perspective view showing another embodiment of the head mount display device according to the present invention.

FIG. 5 is a plan view showing another embodiment of the head mount display device according to the present invention.

FIG. 6 is a plan view showing another embodiment of the head mount display device according to the present invention.

FIG. 7 is a plan view showing another embodiment of the head mount display device according to the present invention.

FIG. 8 is a plan view showing another embodiment of the head mount display device according to the present invention.

FIG. 9 is a perspective view showing an example of a conventional head mount display device.

[Explanation of symbols]

1a1 ... Eye movement measuring device, 1a2 ... Flat display device, 1
a3 ... lens, 1a4 ... moving device, 1a5 ... eye, 1a6
... gazing point 1a8 ... gazing point calculation device.

Claims (4)

[Claims] 1. An eye movement measuring device for measuring eye movement for each of both eyes, a flat display device, a moving device for two-dimensionally moving the flat display device, and a lens, A gazing point calculating device that calculates the positions of the gazing points of both eyes from the eye movement detected by the eye movement measuring device, and the position of the flat display device from the calculated value of the gazing point calculating device via the moving device. A head mount display device, comprising: 2. A plurality of the surface display devices are provided for each of both eyes, and each surface display device is provided with at least two of a near point, a gazing point, and a far point. The head mount display device according to claim 1, which is characterized in that. 3. A surface display device comprising a plurality of surface display devices for each of both eyes, each surface display device being at least one of a near point and a far point, and a surface display device for a gazing point. 3. The head mount display device according to claim 1, further comprising a control device that controls a distance between the head mount display device and the control device. 4. The flat display device is constituted by a combination of an optical scanning device for scanning a light beam or a display projection device for projecting a flat display image and a scattering plate. The head mounted display device according to any one of the above.